2012届毕业生 毕业论文

题 目: 氧化锌对陶瓷结合剂性能影响的讨论

院系名称： 专业班级： 学生姓名： 学 号：

指导教师： 教师职称：

2012年 05 月 20 日

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摘要

本设计主要研究不同用量的氧化锌对陶瓷结合剂性能的影响，以粘土-长石-硼玻璃基础体系为结合剂，以碳化硅为磨粒，分别加入5%﹑10%、15%、20% 的氧化锌，测出相对应的耐火度、热膨胀系数、抗折强度、硬度，然后进行数据处理分析，对比不加氧化锌的基础结合剂，研究氧化锌对其性能的影响。根据氧化锌含量的不同，耐火度也不断变化，同时助溶效果也大大不同。 此外，氧化锌对陶瓷结合剂抗折强度、热膨胀系数也有一定影响。当氧化锌加入量约为10%时其抗折强度最大，小于10%时，随氧化锌含量的增高而提高，当加入量大于10%时，随着氧化锌含量的增加而降低；氧化锌的加入会增大陶瓷结合剂的热膨胀系数，同时从断面形貌来看，氧化锌的加入可以改善结合剂与磨粒的之间的界面结合状况性。总之，氧化锌能够显著改变陶瓷结合剂的性能，对低温陶瓷结合剂的制备有着光明的前景。

关键词：陶瓷结合剂 氧化锌 耐火度 抗折强度 热膨胀系数

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Title Effect of ZnO content on properties of vitrified bond

Abstract

This design different amount of zinc oxide ceramic bonding agent performance, clay -feldspar - borosilicate glass base system for the binder, silicon carbide abrasive ,respectively, 5%, 10%, 15%, 20% zinc oxide, measured by the refractoriness of the corresponding coefficient of thermal expansion, flexural strength, hardness, and data processing and analysis, the contrast without the zinc oxide on the basis of binding agents, the study of zinc oxide ceramic bonding agent performance. The experiments show that with zinc oxide to significantly reduce the refractoriness of the ceramic binder, and with the increase of the zinc oxide content, refractoriness to continuously reduce its solubilization effect is more pronounced. In addition, the zinc oxide ceramic binder flexural strength, the coefficient of thermal expansion. When the zinc oxide by adding about 10% of its flexural strength, less than 10%, with the zinc oxide content increased and improved by adding large amount of 10%, decreases with increasing zinc oxide content; adding zinc oxide to increase the coefficient of thermal expansion of the ceramic binder, the view from the fracture surface at the same time, adding zinc oxide can improve the interface between the binder and abrasive combined with status of sex. In short, zinc oxide can significantly change the ceramic binder properties, the preparation of low temperature ceramic binder has a bright future.

Keyword：Vitrified bond Zinc oxide Refractoriness Flexural strength

Coefficient of thermal expansion

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